-1000x1000.webp "Plug and Play T-One Wiring Harness Connector 4-Flat Mounting Bracket 4-Flat Car End Tester w/ LED Display 118449 118144 20114 Tekonsha Trailer Wiring and Bracket Light Tester 08-19 Toyota Highlander Plug Play 4-Flat Harness 08 09 10 11 12 13 14 15 16 17")
-150x150.webp "Plug and Play T-One Wiring Harness Connector 4-Flat Mounting Bracket 4-Flat Car End Tester w/ LED Display 118449 118144 20114 Tekonsha Trailer Wiring and Bracket Light Tester 08-19 Toyota Highlander Plug Play 4-Flat Harness 08 09 10 11 12 13 14 15 16 17")
-550x550.webp "Plug and Play T-One Wiring Harness Connector 4-Flat Mounting Bracket 4-Flat Car End Tester w/ LED Display 118449 118144 20114 Tekonsha Trailer Wiring and Bracket Light Tester 08-19 Toyota Highlander Plug Play 4-Flat Harness 08 09 10 11 12 13 14 15 16 17")
Trailer Wiring and Bracket w/ Light Tester For 08‑19 Toyota Highlander Plug & Play 4‑Flat Harness
Model: 118449 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2008 - 2019 Toyota, Highlander, All Styles
2008 - 2019 Toyota, Highlander, without factory tow package
Wiring Kit Specs:
| Part Number | 118449 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions |  |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
08 09 10 11 12 13 14 15 16 17 18 19 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
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Product Details
- Brand: Tekonsha
- Model: 118449 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
| Year Range | Make | Model | Style |
|---|
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2008 - 2019 Toyota, Highlander, All Styles
2008 - 2019 Toyota, Highlander, without factory tow package
Wiring Kit Specs:
| Part Number | 118449 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
08 09 10 11 12 13 14 15 16 17 18 19 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Get Expert Help
Trailer Wiring and Bracket w/ Light Tester For 08-19 Toyota Highlander Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-Connector Adapter for Toyota Highlander
Part Numbers:
- 118449
Tools Required:
- Test Probe
- Trim Panel Remover
Step-by-Step Instructions:
2008-2013 Toyota Highlander:
-
Locate the 10-Pin Tow Plug:
- Under the dashboard on the driver’s side, locate the 10-pin tow plug between the emergency brake pedal and the brake pedal.
- Ensure the mating surfaces of the vehicle harness connectors match the 10-pin tow plug adapter ends.
-
Connect the 10-Pin Tow Plug Adapter:
- Insert the 10-pin tow plug adapter and lock it into place. Be careful not to damage the locking tabs and ensure the connectors are fully inserted.
-
Mount the Black Box:
- Route the converter over to the driver’s side kick panel area.
- Locate the opening between the vehicle body and the emergency brake pedal bracket and mount the black box in this area using the provided double-sided tape.
- Secure the remainder of the wiring harness using the provided cable ties to prevent damage or rattling.
-
Access the Rear Cargo Area:
- Open the rear tailgate. On the driver’s side, remove access panels, the threshold, trunk floor panels, and trays.
- Set aside all items removed carefully.
-
Locate the Factory 4-Pin Tow Harness Connector:
- On the driver’s side, locate the 4-pin tow harness connector.
- Ensure the mating surfaces of the connectors match the tow plug adapter ends. All connector surfaces should be clean and free of dirt.
-
Connect the 4-Pin Tow Plug Adapter:
- Insert the 4-pin tow plug adapter into the mating connector and lock it into place.
2014-Current Toyota Highlander:
-
Access the Rear Cargo Area:
- Open the rear tailgate and remove the access panels, threshold, trunk floor panels, and trays.
-
Locate and Connect the 10-Pin Connector:
- Behind the rear interior trim panel on the driver’s side, locate the 10-pin connector.
- Insert the 10-pin tow plug adapter and lock it into place.
-
Locate and Connect the 4-Pin Connector:
- Locate the 4-pin tow connector behind the rear interior trim panel on the driver’s side.
- Insert the 4-pin tow plug adapter and lock it into place.
-
Mount the Black Box:
- Find a flat surface in an out-of-the-way location on the driver’s side.
- Mount the T-Connector black converter box using the provided double-sided tape.
Final Steps for All Models:
-
Reassemble the Cargo Area:
- Reposition the trays, trunk floor panels, access panels, and threshold.
-
Insert the Fuse:
- Open the hood and locate the fuse panel on the driver’s side.
- Insert the provided 10-amp fuse into the towing fuse slot as specified in the owner’s manual.
-
Test the Installation:
- Test the T-Connector installation with a test light or trailer to verify functionality.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
Specifications:
- Max. stop/turn light: 1 per side (2.1 amps)
- Max. tail lights: (5.6 amps)
Safety Notes:
- All connections must be complete for the T-Connector to function properly.
- Do not exceed the towing manufacturer’s ratings or unit specifications.
- Follow all installation instructions carefully.
Manufacturer Notes:
- Store the 4-flat connector in the trunk or rear cargo area when not in use.
- Refer to the vehicle owner’s manual for additional guidance.
Installation Instructions for T-Connector Adapter for Toyota Highlander
Part Numbers:
- 118449
Tools Required:
- Test Probe
- Trim Panel Remover
Step-by-Step Instructions:
2008-2013 Toyota Highlander:
-
Locate the 10-Pin Tow Plug:
- Under the dashboard on the driver’s side, locate the 10-pin tow plug between the emergency brake pedal and the brake pedal.
- Ensure the mating surfaces of the vehicle harness connectors match the 10-pin tow plug adapter ends.
-
Connect the 10-Pin Tow Plug Adapter:
- Insert the 10-pin tow plug adapter and lock it into place. Be careful not to damage the locking tabs and ensure the connectors are fully inserted.
-
Mount the Black Box:
- Route the converter over to the driver’s side kick panel area.
- Locate the opening between the vehicle body and the emergency brake pedal bracket and mount the black box in this area using the provided double-sided tape.
- Secure the remainder of the wiring harness using the provided cable ties to prevent damage or rattling.
-
Access the Rear Cargo Area:
- Open the rear tailgate. On the driver’s side, remove access panels, the threshold, trunk floor panels, and trays.
- Set aside all items removed carefully.
-
Locate the Factory 4-Pin Tow Harness Connector:
- On the driver’s side, locate the 4-pin tow harness connector.
- Ensure the mating surfaces of the connectors match the tow plug adapter ends. All connector surfaces should be clean and free of dirt.
-
Connect the 4-Pin Tow Plug Adapter:
- Insert the 4-pin tow plug adapter into the mating connector and lock it into place.
2014-Current Toyota Highlander:
-
Access the Rear Cargo Area:
- Open the rear tailgate and remove the access panels, threshold, trunk floor panels, and trays.
-
Locate and Connect the 10-Pin Connector:
- Behind the rear interior trim panel on the driver’s side, locate the 10-pin connector.
- Insert the 10-pin tow plug adapter and lock it into place.
-
Locate and Connect the 4-Pin Connector:
- Locate the 4-pin tow connector behind the rear interior trim panel on the driver’s side.
- Insert the 4-pin tow plug adapter and lock it into place.
-
Mount the Black Box:
- Find a flat surface in an out-of-the-way location on the driver’s side.
- Mount the T-Connector black converter box using the provided double-sided tape.
Final Steps for All Models:
-
Reassemble the Cargo Area:
- Reposition the trays, trunk floor panels, access panels, and threshold.
-
Insert the Fuse:
- Open the hood and locate the fuse panel on the driver’s side.
- Insert the provided 10-amp fuse into the towing fuse slot as specified in the owner’s manual.
-
Test the Installation:
- Test the T-Connector installation with a test light or trailer to verify functionality.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
Specifications:
- Max. stop/turn light: 1 per side (2.1 amps)
- Max. tail lights: (5.6 amps)
Safety Notes:
- All connections must be complete for the T-Connector to function properly.
- Do not exceed the towing manufacturer’s ratings or unit specifications.
- Follow all installation instructions carefully.
Manufacturer Notes:
- Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
- Store the 4-flat connector in the trunk or rear cargo area when not in use.
- Refer to the vehicle owner’s manual for additional guidance.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
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